<!DOCTYPE html>
<iframe id="iframe"
  style="position: absolute; top: 5.5px; left: 5.5px; border: none; width: 200px; height: 200px"
  srcdoc="
      <div id='target' style='width: 100px; height: 100px; background: black; will-change: transform'>
      </div>
  ">
</iframe>
